一、55%Galvalume alloy coatings

Aluminum zinc composition control, coating containing 55% aluminum, 43.5% zinc, 1.5% silicon, the alloy products, aluminum zinc products and hot dip galvanized production process is the same.

二、55%Galvalume alloy structure

2.3 Characteristic of 55% galvalume alloy coatings

2.3.1Coating characteristics：

Corrosion resistance, high temperature oxidation resistance heat reflection, easy to form

2.3.2 Comparison of GI with GL

①Corrosion resistance of the same coating thickness: GL =2~6× GI

②High temperature oxidation resistance, thermal reflection

2.4  55%Galvalume type surface treatment

2.4.1Chromate（C）

2.4.2Oiled （O）

2.4.3Chromate + Oiled（Co）

2.4.4Chromate-free （C5）

2.4.5Chromate-free + Oiled （Co5）

2.4.6Anti-fingerprint（AF）

2.4.7Anti-fingerprint + Chromate-free（AF5）

2.4.8Undisposed（U）

2.5  Application of galvalume products

2.5.1  Building materials

2.5.2  Barrel

2.5.3  High-strength steel

2.5.4  Household appliances

2.5.5  Satellite antenna and so on.